EXPLANATION PRACTICE An interactive explanation way to allow

EXPLANATION & PRACTICE An interactive explanation. ^ (way to allow information to flow from the computer to you!) GO

MENU Addition and Subtraction Rules Adding to 100 Explanation Quiz Explanation 2 -D & 3 -D objects Quiz Explanation Video Quiz

QUIZ OVER ADDING TO 100 Solve the problem. Click on your answer 76+_____ = 100 14 34 24 14 52

HOW DID YOU GET THIS ANSWER? • incorrect… But, think about how you came up with your answer. What do you think you didn’t do right? What can we do better next time? Hint: Think about your tens and ones places. Once you go through the explanation please try the question again. .

YAY • You got the answer correct! What did you do correctly? • Did you just get it right? • How did think about this problem? Did you subtract? Did you think about your ones and tens place?

SUBTRACT Great! You understand how to work backwards! You know that 100 -24= 76. Then, 76+24=100 But, make sure you know how your tens and ones place. 1 s and 10 s place

TENS AND ONES PLACE How many more ”tens” do you need to make a new group? 76 How many more ”ones” do you need to make a new group? + CONTINUE

How many more ”tens” do you need to make a new group? TENS AND ONES PLACE 76 + 4 ones, 2 tens +1 REGROUPED ten How many more ”ones” do you need to make a new group? 100 REGROUP (Colors RED AND BLUE MIXED MAKE PURPLE) 1. 2. 3. 4. Remember, 6+4 will make 10*. Then you REGROUP and make another group of “ 10”. With the new group of “ 10” from the REGROUPED ”ones” will make the addition problem of 7 + 2 + 1 7+2 = 9+1 = 10*. *REGROUP!! MENU

ADDITION AND SUBTRACTION RULES Are 3, 4, and 7 a fact family? YES NO NO

Fa d an 9 2 m ily EXPLANATION OF ADDITION AND SUBTRACTION RULES Fa ct 7 2 7 These numbers represent the fact family including the numbers : 2, 7, 9 ME 2+7=9 7+2=9 9– 2=7 9– 7=2 NU

UMMM, THINK AGAIN Are 3, 4, and 7 a fact family? 7 -4 = 3 7 -3 = 4 4+3 = 7 3+4 = 7 CONTINUE

RETRY Is 6 and 3 a fact family? YES NO NO

UMMM, THINK AGAIN Are 6 and 3 a fact family? 6 -3 = 3 3+3 = 6 CONTINUE

ADDITION AND SUBTRACTION RULES Are 9+7 and 9+3 and 9 -2 and 2+9 all in a fact family? YES NO

YES! GREAT JOB MENU

LET’S RE-THINK THIS Are 9+7 and 9+3 and 9 -2 and 2+9 all in a fact family? 9+7 = 16 9+3 = 12 While the numbers may be the same none of the answers are the same. 9 -2 = 7 2+9 = 11 CONTINUE

PLEASE READ 2 -D AND 3 -D Models Ø For the images you see you will be shown 3 pictures and you will determine if they are 2 -D or 3 -D. CONTINUE

EXPLANATION VIDEO https: //www. youtube. com/watch? v=ebr. Rhy. GRljo MENU

2 -D 3 -D

2 -D 3 -D

2 -D 3 -D

TRY AGAIN You can do this! Go Back. .

TRY AGAIN • GO BACK Go Back. .

TRY AGAIN • GO BACK Go Back. .

YES! • GOOD JOB! CONTINUE

YES! • GOOD JOB! CONTINUE

YES! • GOOD JOB! • You are DONE! • Have a wonderful day!

MENU …Finish